Kyle Petty’s harsh criticism of Danica Patrick not only has stirred up controversy and debate in the Sprint Cup garage, but also riled up NASCAR fans on Twitter.

Petty, a former Sprint Cup driver and current TV analyst for Speed and TNT, said Thursday that Patrick was a “marketing machine” and not a real racecar driver.

“The King (Richard Petty) always had that stupid saying, but it’s true, ‘Lots of drivers can drive fast, but very few drivers can race,’” Kyle Petty, the son of Richard Petty, said on Speed.

“Danica has been the perfect example of somebody who can qualify better than what she runs. She can go fast, but she can’t race. I think she’s come a long way, but she’s still not a racecar driver. And I don’t think she’s ever going to be a racecar driver.”